Brad Fitzpatrick (brad) wrote,
Brad Fitzpatrick

potential linux NFS server DoS?

So, somebody found a 20 month old bug in Linux's NFS server code:

A dentry is freed twice, and somebody can snag it in the very short time between, then have it be corrupted on the second free, resulting in a likely crash.

I wonder how long before somebody makes a DoS tool out of this, just by doing tons of rename operations in one thread while making and deleting tons of files in another. I guess it's not high-profile enough to be a huge deal... not like there are public NFS servers out there, are there? People would just be crashing their business/school NFS servers.

  • Happy Birthday!

    Happy 20th Birthday, LiveJournal! 🐐🎂🎉

  • hi

    Posting from the iPhone app. Maybe I'm unblocked now.

  • Why, hello...

    Long time no see. How's my baby doing?

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